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diff --git a/libksieve/ksieve/lexer.h b/libksieve/ksieve/lexer.h
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+/*  -*- c++ -*-
+    ksieve/lexer.h
+
+    This file is part of KSieve,
+    the KDE internet mail/usenet news message filtering library.
+    Copyright (c) 2003 Marc Mutz <mutz@kde.org>
+
+    KSieve is free software; you can redistribute it and/or modify it
+    under the terms of the GNU General Public License, version 2, as
+    published by the Free Software Foundation.
+
+    KSieve is distributed in the hope that it will be useful, but
+    WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+    General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+
+    In addition, as a special exception, the copyright holders give
+    permission to link the code of this program with any edition of
+    the Qt library by Trolltech AS, Norway (or with modified versions
+    of Qt that use the same license as Qt), and distribute linked
+    combinations including the two.  You must obey the GNU General
+    Public License in all respects for all of the code used other than
+    Qt.  If you modify this file, you may extend this exception to
+    your version of the file, but you are not obligated to do so.  If
+    you do not wish to do so, delete this exception statement from
+    your version.
+*/
+
+#ifndef __KSIEVE_LEXER_H__
+#define __KSIEVE_LEXER_H__
+
+class QString;
+
+namespace KSieve {
+
+  class Error;
+
+  class Lexer {
+  public:
+    enum Options {
+      IncludeComments = 0,
+      IgnoreComments = 1,
+      IncludeLineFeeds = 0,
+      IgnoreLineFeeds = 2
+    };
+
+    Lexer( const char * scursor, const char * send, int options=0 );
+    ~Lexer();
+
+    /** Return whether comments are returned by @ref
+	nextToken. Default is to not ignore comments. Ignoring them
+	can speed up script parsing a bit, and can be used when the
+	internal representation of the script won't be serialized into
+	string form again (or if you simply want to delete all
+	comments)
+    **/
+    bool ignoreComments() const;
+
+    /** Return whether line feeds are returned by @ref
+	nextToken. Default is to not ignore line feeds. Ignoring them
+	can speed up script parsing a bit, and can be used when the
+	internal representation of the script won't be serialized into
+	string form again.
+    **/
+    bool ignoreLineFeeds() const;
+
+    const Error & error() const;
+
+    bool atEnd() const;
+    int column() const;
+    int line() const;
+
+    enum Token {
+      None = 0,
+      Number,          // 1, 100, 1M, 10k, 1G, 2g, 3m
+      Identifier,      // atom
+      Tag,             // :tag
+      Special,         // {} [] () ,;
+      QuotedString,    // "foo\"bar" -> foo"bar
+      MultiLineString, // text: \nfoo\n. -> foo
+      HashComment,     // # foo
+      BracketComment,  // /* foo */
+      LineFeeds        // the number of line feeds encountered
+    };
+
+    /** Parse the next token and return it's type. @p result will contain
+	the value of the token. */
+    Token nextToken( QString & result );
+
+    void save();
+    void restore();
+      
+    class Impl;
+  private:
+    Impl * i;
+
+  private:
+    const Lexer & operator=( const Lexer & );
+    Lexer( const Lexer & );
+  };
+
+} // namespace KSieve
+
+#endif // __KSIEVE_LEXER_H__